That’s exactly what Yaamava’ Resort & Casino at San Manuel - Highland, California’s newest casino resort - brings to those who want a luxurious stay-and-play experience. To the inland Southern California Serrano tribe, it means “spring,” a time for growth and rebirth. If you’ve recently traveled highways in the western United States, you’ve possibly seen the word “Yaamava’” on billboards. Credit: Yaamava’ Resort & Casino At San Manuel Check into Southern California’s newest casino resort.